Etymology : Middle English, probably from dep deep
Pronunciation : depth
Function : noun
Date : 14th century
1. distance from top to bottom; deepness; profundity. depth\depth\, n. (aëronautics) the perpendicular distance from the chord to the farthest point of an arched surface.depth \depth\ (s&ebreve;pth), n. [from deep; akin to d. diepte, icel. d&ymacr;pt, d&ymacr;p?, goth. diupi?a.].
2. the quality of being deep; deepness; perpendicular measurement downward from the surface, or horizontal measurement backward from the front; as, the depth of a river; the depth of a body of troops.
3. profoundness; extent or degree of intensity; abundance; completeness; as, depth of knowledge, or color. mindful of that heavenly love which knows no end in depth or height.
4. lowness; as, depth of sound.
5. that which is deep; a deep, or the deepest, part or place; the deep; the middle part; as, the depth of night, or of winter. from you unclouded depth above. the depth closed me round about.
6. 5. (logic) the number of simple elements which an abstract conception or notion includes; the comprehension or content.
7. (horology) a pair of toothed wheels which work together. [r.]depth of a sail (naut.), the extent of a square sail from the head rope to the foot rope; the length of the after leach of a staysail or boom sail; -- commonly called the drop of a sail.depth n.
8. extent downward or backward or inward: "the depth of the water"; "depth of a shelf"; "depth of a closet".
9. degree of psychological or intellectual depth.
10. (usually plural) the deepest and most remote part; "from the depths of darkest africa"; "signals received from the depths of space".
11. (usually plural) a low moral state; "he had sunk to the depths of addiction".
12. the intellectual ability to penetrate deeply into ideas [syn: astuteness, profundity, profoundness].
13. The quality of being deep; deepness; perpendicular measurement downward from the surface, or horizontal measurement backward from the front; as, the depth of a river; the depth of a body of troops.
14. Profoundness; extent or degree of intensity; abundance; completeness; as, depth of knowledge, or color.
15. Lowness; as, depth of sound.
16. That which is deep; a deep, or the deepest, part or place; the deep; the middle part; as, the depth of night, or of winter.
17. The number of simple elements which an abstract conception or notion includes; the comprehension or content.
18. A pair of toothed wheels which work together.
19. The perpendicular distance from the chord to the farthest point of an arched surface. degree of psychological or intellectual depth extent downward or backward or inward; "the depth of the water"; "depth of a shelf"; "depth of a closet" the deepest and most remote part; "from the depths of darkest Africa"; "signals received from the depths of space" a low moral state; "he had sunk to the depths of addiction".
20. 1. The depth of something such as a river or hole is the distance downwards from its top surface, or between its upper and lower surfaces. The smaller lake ranges from five to fourteen feet in depth The depth of the shaft is 520 yards They were detected at depths of more than a kilometre in the sea.
21. The depth of something such as a cupboard or drawer is the distance between its front surface and its back.
22. If an emotion is very strongly or intensely felt, you can talk about its depth. I am well aware of the depth of feeling that exists in Londonderry = strength.
23. The depth of a situation is its extent and seriousness. The country's leadership had underestimated the depth of the crisis. = severity.
24. The depth of someone's knowledge is the great amount that they know. We felt at home with her and were impressed with the depth of her knowledge.
25. If you say that someone or something has depth, you mean that they have serious and interesting qualities which are not immediately obvious and which you have to think about carefully before you can fully understand them. His music lacks depth.
26. The depths are places that are a long way below the surface of the sea or earth. The ship vanished into the depths.
27. If you talk about the depths of an area, you mean the parts of it which are very far from the edge. the depths of the countryside.
28. If you are in the depths of an unpleasant emotion, you feel that emotion very strongly. I was in the depths of despair when the baby was sick.
29. If something happens in the depths of a difficult or unpleasant period of time, it happens in the middle and most severe or intense part of it. The country is in the depths of a recession.
30. If you deal with a subject in depth, you deal with it very thoroughly and consider all the aspects of it. We will discuss these three areas in depth.
31. If you say that someone is out of their depth, you mean that they are in a situation that is much too difficult for them to be able to cope with it. Mr Gibson is clearly intellectually out of his depth.
32. If you are out of your depth, you are in water that is deeper than you are tall, with the result that you cannot stand up with your head above water.
33. to plumb new depths: see:
plumb to plumb the depths: see plumb.